This document analyzes the co-authorship network of authors who have published in the VLDB conference over time. It finds that like other academic networks, the VLDB network exhibits the properties of densification over time, increasing clustering, and the presence of highly connected hubs. Key metrics like diameter and average path length remain small even as the network grows significantly in size.

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Manh Cuong Pham, Ralf Klamma — Information Systems & Databases, RWTH Aachen University, Aachen, Germany — pham@dbis.rwth-aachen.de
The VLDB Author Community
Co-authorship network visualization Key community members
# Authors
14-17 Christos Faloutsos, Michael J. Carey, Philip A. Bernstein, Surajit Chaudhuri, Gerhard Weikum
Yannis E. Ioannidis, Jeffrey F. Naughton, Avi Silberschatz, Abraham Silberschatz, Serge Abiteboul,
13 Raghu Ramakrishnan
12 Hans-Jörg Schek, Georges Gardarin, Alon Y. Levy, Alon Y. Halevy, Philip S. Yu, Umeshwar Dayal
Paul Larson, Hector Garcia-Molina, Rakesh Agrawal, Hongjun Lu, Donald Kossmann, Jiawei Han,
11 Divesh Srivastava
Stanley B. Zdonik, Michael J. Franklin, Shamkant B. Navathe, Nick Roussopoulos, Raymond T. Ng, S.
10 Sudarshan, Nick Koudas, V. S. Lakshmanan, Guido Moerkotte, Mike Franklin, Laks V. S. Lakshmanan,
Jennifer Widom
Beng Chin Ooi, Rajeev Rastogi, Christian S. Jensen, Dennis Tsichritzis, Patrick Valduriez, Minos N.
9 Garofalakis, Stanley Y. W. Su, Kian-Lee Tan, Martin L. Kersten, Tova Milo
2010 Co-authorship network evolution pattern compared to
SIGMOD, PODS and ICDE
(a) Densification law (b) Clustering Coefficient
5
10 1
VLDB
VLDB 0.95 SIGMOD
4 SIGMOD
10 PODS
PODS 0.9
ICDE
ICDE
0.85
3
10
0.8
m
N
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2 0.75
r
f
10
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0.7
1
10 0.65
1 2 3 4
10 10 10 10 0 5 10 15 20 25 30 35
Number of nodes Age
(c) Maximum Betweenness (d) Largest connected component
0.08 0.8
VLDB
SIGMOD
0.06 0.6 PODS
ICDE
0.04 0.4
VLDB
0.02 SIGMOD 0.2
M
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ICDE
0 0
0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 35
Age Age
(e) Diameter (f) Average Path Length
25 8
7
20
6
15
5
4
m
D
10
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VLDB VLDB
3
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SIGMOD
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SIGMOD
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PODS PODS
2
ICDE ICDE
0 1
0 5 10 15 20 25 30 35 0 5 10 15 20 25 30 35
1975 Age Age
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